id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,pull_request,body,repo,type,active_lock_reason,performed_via_github_app,reactions,draft,state_reason
919702451,MDU6SXNzdWU5MTk3MDI0NTE=,271,table.upsert_all() fails if input has a single column that should be a primary key,9599,closed,0,,,1,2021-06-13T02:50:27Z,2021-06-13T02:57:29Z,2021-06-13T02:57:29Z,OWNER,,"This works:
```pycon
>>> db['foo'].insert_all([{""name"": ""hello""}], pk=""name"")
<Table foo (name)>
```
But this fails:
```
>>> db['foo3'].upsert_all([{""name"": ""hello""}], pk=""name"")
Traceback (most recent call last):
  File ""<stdin>"", line 1, in <module>
  File ""/Users/simon/.local/share/virtualenvs/datasette.io-TK86ygSO/lib/python3.9/site-packages/sqlite_utils/db.py"", line 1837, in upsert_all
    return self.insert_all(
  File ""/Users/simon/.local/share/virtualenvs/datasette.io-TK86ygSO/lib/python3.9/site-packages/sqlite_utils/db.py"", line 1778, in insert_all
    self.insert_chunk(
  File ""/Users/simon/.local/share/virtualenvs/datasette.io-TK86ygSO/lib/python3.9/site-packages/sqlite_utils/db.py"", line 1588, in insert_chunk
    result = self.db.execute(query, params)
  File ""/Users/simon/.local/share/virtualenvs/datasette.io-TK86ygSO/lib/python3.9/site-packages/sqlite_utils/db.py"", line 213, in execute
    return self.conn.execute(sql, parameters)
sqlite3.OperationalError: near ""WHERE"": syntax error
```
With the debugger:
```
>>> import pdb; pdb.pm()
> /Users/simon/.local/share/virtualenvs/datasette.io-TK86ygSO/lib/python3.9/site-packages/sqlite_utils/db.py(213)execute()
-> return self.conn.execute(sql, parameters)
(Pdb) print(sql, parameters)
UPDATE [foo3] SET  WHERE [name] = ? ['hello']
```",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/271/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed